Chrissy Teigen, who miscarried their son — who was to be named Jack — a couple of weeks ago.“This is for Chrissy,” Legend said as he started the song, during which his voice broke ever so briefly at times before regaining its strength.“John, that was so beautiful,” said BBMAs host — and Legend’s fellow coach on “The Voice” — Kelly Clarkson. “All my love to you and Chrissy.”And the night’s big winner? Post Malone, who picked up his ninth and final trophy — for Top Artist — from Taraji P.